Automatic controlling-valve.



Patented July I6, [90L .TSALY-ER.

AUTOMATIC CONTROLLING VALVE.

(Application filed Dac. 20, 1900.)

(No Model.)

Fill 0 wig;

WITNESSES 5/ 21a 2414 ATTORNEY.

UNITED STATES PATENT OFFICE.

HARRY M. SALYER, OF NEW YORK, N. Y., ASSIGNOR TO LUDVVIG 8a 00.,

.OF SAME PLACE.

AUTOMATIC CONTROLLING-VALVE.

SPECIFICATION forming part of Letters Patent No. 678,427, dated July 16,1901.

Application filed December 20, 1900. Serial No. 40,485. (No model.)

of the city of New York, borough of the Bronx, in the county of New Yorkand State of New York, have invented certain new and 4 usefulImprovements in Automatic Controlling-Valves, of which the following isa specification. i

The object of my invention is to provide a new and improved automaticcontrollingvalve for pipes containing a fluid under pressure, such asthe steam-pipe conveying steam to an engine or a compressed-air pipe andthe like. 1

In the accompanying drawingone type of my improved automaticcontrolling-valve is shown in section.

The Valve-casing A is provided with a partition B, from which a hub 0extends, in which hub a chamber D is formed. This chamber is open at thetop and can be closed by a valve E, resting on the top of the hub andprovided with a stem F, which extends through the hub. A lateral neckGextends from the exterior of the casing to the chamberD,and an openingH in the side of the casingis in communication with that part of thecasing above the valve E. When the valve E is raised, more or less, thefluid under pressure-such as steam, compressed air, &c.-can pass from atube connected with the neck G through said neck, the chamber D, theupper part of the casing A, and out through the opening H into a pipe H,connected with said opening. When the valve E is seated, suchcommunication is interrupted. A diaphragm J is secured in the casing Abelow the partition B and is attached to the lower end of the valve-stemF. The valve-stem F has a duct orpassage K extending from the spacebelow the diaphragm J to the space between the diaphragm J and partitionB, and this duct can be adjusted in size by means of a screw L,extending through the valve-stem F from the upper end. A small hole M inthe partition B establishes communication between the space between thepartition B and diaphragm J and the neck G. The casing A has a neck Nbelow the diaphragm J, and this neck is connected with one or more tubes0, which are normally closed at their outer ends, but can be openedautomatically or at will. The pressure existing in the neck G andchamber D-say one hundred pounds per square inch, more or lessacts onthe under side of the valve E and lifts the same as long as no greaterforce serves to keep this valve on its seat. This same pressure existsin the space between the diaphragm J and partition B, as the hole Mestablishes communication between such space and the neck G. The samepressure exists in the space below the diaphragm as long as the tube ortubes 0 are closed, as the duct K establishes communication between thespace above the dia phragm and the space below the diaphragm. Thediaphragm J is thus held in equilibrium as long as the space below thediaphragm is closedthat is, as long as the pressure cannot escape fromthe sameand as long as the diaphragm is heldinequilibrium the pressureacting upward on the valve E can open the same and hold it open more orless.

If any one of the tubes 0 is opened, the pressure on the under side ofthe diaphragm J at once decreases and the equilibrium of the diaphragmis destroyed.

As the area of the diaphragm J is much greater than the area of theunder side of the valve E and as the pressure on the upper surface ofthe diaphragm and under side of the valve per inch is the same and, asstated, the pressure on the under side of the diaphragm is less thanthat on the upper side, it follows that the pressure on the uppersurface of the diaphragm holds the valve on its seat and the passage ofthe steam or compressed air through its conduit is stopped. For example,one of the tubes 0 could extend to the captains bridge on a steamer,another to the engineers station, and another to an automatic governor,which operates to open the tube 0 when a certain maximum speed isreached.

The engineer or captain or other person could at once stop the shipsengine by opening the end of a tube 0, providing my improved valve islocated in the main steampipe, or the engines could be stoppedautomatically by the governor.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. The combination with a valve-casing, having a partition provided witha hole and with a hub, in which hub a chamber open at one end is formed,which chamber is in commu nication with the exterior of the casing, of avalve for closing said chamber, a diaphragm secured in the casing belowthe partition and connected with the stem of the valve, a duct beingprovided for establishing communication between the space above andbelow the diaphragm and a tube connected with the space between thediaphragm and the bottom of the casing, substantially as herein shownand described.

2. The combination with a valve casing having a partition provided witha hole and with a hub, in which a chamber, open at one end is formed,which chamber is in communication with the exterior of the casing, of avalve for closing said chamber, a diaphragm secured in the casing belowthe partition, and connected with the stem of the valve, said valve-stembeing provided with a duct establishing communication between the spaceabove and below the diaphragm and a tube connected with the spacebetween the diaphragm and the bottom of the casing, substantially asherein shown and described.

3. The combination with a valve casing having a partition provided witha hole and with a hub, in which a chamber, open at one end is formed,which chamber is in communication with the exterior of the casing, of avalve for closing said chamber, a diaphragm secured in the casing belowthe partition, and connected with the stem of the valve, said valve-stembeing provided with a duct establishing communication between the spaceabove and below the diaphragm, means for adjusting the size of this ductand a tube conmeans for reducing at times, the pressure on the underside of the diaphragm,substantially as herein shown and described.

5. The combination with a valve-casing, having a chamber formed therein,of a valve for closing said chamber, a diaphragm held in said casing andconnected with the stem of the valve and means for producing the samefluid-pressure in the casing, against the under side of the valve and onboth sides of the diaphragm and means for reducing at times the pressureon the under side of the diaphragm,substantially as herein shown anddescribed.

6. The combination with a valve-casing having a chamber formed thereinand a partition in said casing on which partition said chamber isformed, of a valve for closing said chamber, a diaphragm held in saidcasing below the partition and connected with the stem of the valve, andmeans for producing the same fluid-pressure in the chamber and on bothfaces of the diaphragm and means for reducing at times, the pressure onthe under side of the diaphragm, substantially as herein shown anddescribed.

Signed at New York city, in the county of New York and State of NewYork, this 26th day of November, A. D. 1900.

' HARRY M. SALYER.

Witnesses:

OSCAR A. GUNZ, II. M. FLANNERY.

